"Air, earth and water," Iroh said. "I'm certain there's representatives of all four here on the Turtle. Perhaps not earth, as the two earthbenders I knew have returned home." He knew there were more people from Korra's time, but he wasn't sure if one was a earthbender, or if he was still here.

"Yes. Air and earth also have animals that demonstrated bending for the first benders. Waterbenders learned from the moon instead."